//
//  WelcomeViewController.swift
//  WeiBo001
//
//  Created by Zhanghong on 15/6/28.
//  Copyright © 2015年 HeiMa. All rights reserved.
//

import UIKit
import SDWebImage

class WelcomeViewController: UIViewController {
    
    var bottomConstraint : NSLayoutConstraint?
    override func loadView() {
        view = UIView()
        
        let backImageView = UIImageView(image: UIImage(named: "ad_background"))
        view.addSubview(backImageView)
        view.addSubview(iconView)
        view.addSubview(messageLabel)
        
        backImageView.translatesAutoresizingMaskIntoConstraints = false
        view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|[subView]|", options: NSLayoutFormatOptions.AlignAllBaseline, metrics: nil, views: ["subView": backImageView]))
            view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|[subView]|", options: NSLayoutFormatOptions.AlignAllBaseline, metrics: nil, views: ["subView" : backImageView]))
        
        iconView.translatesAutoresizingMaskIntoConstraints = false
        view.addConstraint(NSLayoutConstraint(item: iconView, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal, toItem: view, attribute: NSLayoutAttribute.CenterX, multiplier: 1.0, constant: 0))
        bottomConstraint = NSLayoutConstraint(item: iconView, attribute: NSLayoutAttribute.Bottom, relatedBy: NSLayoutRelation.Equal, toItem: view, attribute: NSLayoutAttribute.Bottom, multiplier: 1.0, constant: -160)
        view.addConstraint(bottomConstraint!)
        
        view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:[subView(90)]", options: NSLayoutFormatOptions.AlignAllBaseline, metrics: nil, views: ["subView" : iconView]))
        view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:[subView(90)]", options: NSLayoutFormatOptions.AlignAllBaseline, metrics: nil, views: ["subView" : iconView]))
        
        
        messageLabel.translatesAutoresizingMaskIntoConstraints = false
        view.addConstraint(NSLayoutConstraint(item: messageLabel, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal, toItem: iconView, attribute: NSLayoutAttribute.CenterX, multiplier: 1.0, constant: 0))
        view.addConstraint(NSLayoutConstraint(item: messageLabel, attribute: NSLayoutAttribute.Top, relatedBy: NSLayoutRelation.Equal, toItem: iconView, attribute: NSLayoutAttribute.Bottom, multiplier: 1.0, constant: 8))
        
        
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        
        if let urlString = shareAccount?.avatar_large{
            iconView.sd_setImageWithURL(NSURL(string: urlString)!)
        }
    }

    override func viewDidAppear(animated: Bool) {
        super.viewDidAppear(animated)
        
        bottomConstraint?.constant = -(UIScreen.mainScreen().bounds.height - 200)
        UIView.animateWithDuration(1.5, delay: 0, usingSpringWithDamping: 0.8, initialSpringVelocity: 10.0, options: UIViewAnimationOptions.CurveEaseInOut, animations: { () -> Void in
            self.view.layoutIfNeeded()
            }) { (_) -> Void in
                UIView.animateWithDuration(1.0, animations: { () -> Void in
                    self.messageLabel.alpha = 1.0
                    },completion:{_ in
                         NSNotificationCenter.defaultCenter().postNotificationName(HMSwitchRootVCNotification, object: true)
                })
        }
    }

    
    
    lazy var iconView : UIImageView = {
       let iv = UIImageView(image: UIImage(named: "avatar_default_big"))
        iv.layer.masksToBounds = true
        iv.layer.cornerRadius = 45
        return iv
    }()
    
    lazy var messageLabel : UILabel = {
        let label = UILabel()
        label.text = "欢迎归来"
        label.sizeToFit()
        label.alpha = 0
        return label
    }()
}
